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A picture shows samples of a vaccine against Aids elaborate by French professor Erwann Loret and his team, on January 29, 2013 in his laboratory in Marseille, southern France. Clinical trials of a vaccine against the AIDS virus (HIV-1) will begin in February in Marseille with fifty infected volunteers, announced today the Public Assistance Hospitals of Marseille (AP-HM). AFP PHOTO / ANNE-CHRISTINE POUJOULAT / AFP PHOTO / ANNE-CHRISTINE POUJOULAT